Add WebSocket support and launcher

[haydenbaker]

Description of changes:

• Add websocket support for LSP, such that using the LSP over websockets is possible
• Add README snippets about launch options

Testing:

• Launch WSS via ./gradlew run --args="3000 --ws", confirm a websocket client can connect and communicate with it
• Launch stdin/stdout via ./gradlew run --args="0", confirm no behavior change
• Bump version, Publish to maven local, update vscode extension version, confirm no behavior change

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.